PPT-(Mole-Mole problems) (Mole-Mole problems)

Use the coefficients to predict the amount of reactant consumed or product formed The ratio of the coefficients is a ratio of the moles taking part in a reaction Reactants on the left of the arrow are consumed. A Chemist’s “Dozen”. http://www.ccs.k12.in.us/chsteachers/VKundrat/MOLE_DAY_EXPLOD%5B1%5D.gif. The Mole. The particles that make up matter (ions, atoms, and molecules) are . extremely small. Only large amounts of these particles can be weighed. In order to simplify these large numbers we use . 1 stoichiometric equivalences stoichiometric mole ratios Mole-to-Mole Conversions A non-chemist’s view. A mole tells us “how many?”. You know what your neighbor means when they ask to borrow a . dozen. eggs--they want . twelve. eggs. A mole tells us “how many?”. You know (or could figure out!) what Abraham Lincoln meant when he said “four score and seven years ago…” during the Gettysburg Address---a . The Mole. Chemist’s counting number. amount. of a substance . 1 mole is equal to 6.022 x 10. 23. atoms or particles or molecules (Avogadro’s number). There are always 6.022 x 10. 23 . particles in . Atomic mass. Atoms of different elements have different masses. . Mass of a single atom is incredibly small so a special unit called atomic mass unit (. amu. ) is used. . Atomic Mass. Atoms are composed of three particles:. Chemical Quantities. Measuring doughnuts:. 1 dozen = 12 doughnuts (count) . 1 dozen = 500 g doughnuts (mass). 1 dozen = 1 box doughnuts (volume). Measuring steam (H. 2. O gas):. 1 mole = 6.02 x 10. 23 . big. concepts of Chemistry.. The mole is a . counting. number, just like. 1 dozen = . 12. things . 1 score = . 20. things . 1 ream = . 500. things . 1 mole = . 6.022 x 10. 23. . things or . Figure 1Mole mounds tend to be circular with a plug in themiddle Compare with the pocket gopher mound in Figure 2A single litter is born inMarch or April averagingthree or four naked youngYoung moles The Mole in Chemistry . Not this!!. Not this!!!. The Mole. The mole is a counting unit. 1 pair = 2. 1 dozen = 12. 1 mole = 6.022 x 10. 23. atoms. This number is known as Avogadro’s number after Italian chemist . Chapter 9. History. About 200 years ago scientists needed a unit of measure that connected the mass of a molecule or atom with how many of them there were. . Amadeo Avogadro proposed his hypothesis in 1811. At that time, there was no data on the number of particles in a mole, or an agreement on any atomic weights or the standard. . 2. .. 2.) How many moles are there in 63.2g of Cl. 2. ?. 60.4L O. 2. . 22.4L O. 2. . 1 mol O. 2. . = 2.7 mol O. 2. 63.2g Cl. 2. 70g Cl. 2. 1mol Cl. 2. = 0.903mol Cl. 2. Ch. . 9. Math In Chemistry. 2 C. 4. H. 10. + 13 O. 2. ---> 8 CO. 2. + 10 H. 2. O . Show . what the following molar ratios should be.. a. . C. 4. H. 10. / O. 2. . 2:13. b. O. 2. / CO. 2. c. O. 2. / H. 2. O. d. C. 4. Drill . Create your placemat on your giant whiteboard. . Solve: . How many moles are in 4.32 x 10. 24. molecules of H. 2. O? . **Need calculator and Periodic Table today!. Spin your Whiteboard and grade!. The Horse – Charlie Mackesy. Many people have enjoyed reading this book during lockdown – have you heard of the book? Have you read it?. The stories are about four friends – the boy, the mole, the fox and the horse and their deep, unshakeable friendship. Through a series of brief but profound conversations, the reader learns universal truths and rich wisdom from the mouths of the characters celebrating warmth and empathy..